One sensor has detected 118° F at heater. Pd = Power supply, unit running on battery backup (used by LifeCast Spas and many other hot tubs) PSoH = Pressure switch open with high pump. PSoL = Pressure switch open with low pump. PSoC = Pressure switch open with circulating pump. Heater disabled but the spa is operational. Hi limit sensor is disconnected or shorted or the spa temperature is above 112° F. Do not use spa when temperature is flashing or the OH message is displayed. The low speed pump or circ pump will operate continuously until the temperature rises above 45° F. Refer to your owner's manual.ĬoLd = Temperature in the spa heater housing is below 40° F. We make no representation as to the accuracy or completeness of this data and aren't responsible for errors or omissions. You can often determine the make of the control system by looking inside the spa's equipment area.ĭisclaimer: Although we hope this information will be useful, error codes are subject to change without notice. Note: The control system brand name is usually different from the hot tub brand name. More hot tub repair tutorials and videos are here.Wondering what your spa is trying to tell you? Below is a list of common error codes from the top manufacturers of control equipment for hot tubs. FLC goes away and you’re fine and running you know again it’s the pressure switch. You can simply just pull one of those leads off and it should go to FLO or it’ll just clear itself, right. There’s nothing flowing through this actual heater and it’s going FLC which means it’s closed. Make sure the pump is not running and there’s no movement in the tub. Now, if you have an FLC, which means it’s reading closed when it’s not running. Everything is running perfectly fine up ’till this switch.Ĭhanging it, I mean, I don’t think we need to go too far into it. You know that there is no malfunction within the board, end of the operation, or this cable. So, at this particular time I would know that everything is running and this pressure switch is faulty because it keeps going to FLO. Now, it’s going to send power to the heater to allow the tub to heat. We’re going to jumper across these two leads right there just to make electrical contact between the two of them, FLO’s gone. I mean, you could just bend a nail in half. I just took some green wire, stripped both sides. These pressure switches are non-adjustable. There’s got to be something wrong with this pressure switch”. So the water is running through this heater bearer and we still have FLO we’re going to say, “Hmm. Okay? So, if we have movement of water in the hot tub and pump one is running and the water is moving. One is pump one is actually running on low speed and two, that there’s movement of water within the hot tub. First thing you’re going to do when go to someones house and they call when they have a problem with FLO error is taking a look in the tub and we’re going to make sure of two things. So, what I have here is we’ve got a pack with some power hooked to it and we’ve got out cable, which is your pressure switch cable, right up to the pressure switch on this heater, and we’ve got FLO. If the pump is not running but the diaphragm is closing the contact you’re going to get FLC because it’s closed when it’s not supposed to be. Obviously, FLC., flow switch closed is the opposite. which means flow switch open because the contacts have not closed. If it does not close the contact you’re going to get an FLO. This switch has a diaphragm side of it which is going to go up, close the contact between these two points. The purpose of your pressure switch is to measure pressure in the line when your pump is running. We need to understand, right off the bat, a pressure switch has two error codes. A bit of a diagnostics that go into looking over the pressure switches themselves. Most part actually is qualify pressure switch to be changed. What we’re gonna do right now is change a pressure switch.
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